Legal Requirements for Maths Tuition

I want to tutor A-Level / GCSE Maths, I have the skill, previous experience and some clients as well. But I am not sure what the legal requirements for it are. I now know how to register as self employed, how to pay the taxes and NI. What I want to know is if I have to obtain some kind of license or criminal check or something like that.

I want to tutor A-Level / GCSE Maths, I have the skill, previous experience and some clients as well. But I am not sure what the legal requirements for it are. I now know how to register as self employed, how to pay the taxes and NI. What I want to know is if I have to obtain some kind of license or criminal check or something like that.